Alarm-clock.



G. KERN.

ALARM CLOCK.

APPLICATION FILED FEB. 12, IBIS,

1,300,278. Patented Apr. 15,1919.

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ALARM CLOCK.

APPLICATION FILED FEB. 12, 1918.

Patented Apr. 15, 1919.

5SHEETSS,HEET 2.

ATTORNEY WITNESSES zim/ 95 G. KERN.

ALARM CLOCK.

APPLICATION FILED FEB. I2. 1918.

Patented Apr. 15, 1919.

5 SHEETS-SHEET 3.

l ENTOR WITNESSES ATTORN Y G. KERN.

ALARM CLOCK.

APPLICATION FILED FEB. I2, 1919.

1,300,278. Pilflll'fld Apr. 15,1919.

5 SHEETS-SHEET 4.

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APPLICATION FILED FEB-12,1918.

1,300,278, Patented Apr. 15, 1919.

5 SHEETSSHEET 5- WITNESSES ATTORNEY UNITED STATES PATENT OFFICE.

GEORGE KERN, OF PERU, ILLINOIS, ASSIGNOIR. '10 WESTERN CLOCK C0,, 01 LA SALLE, ILLINOIS, A CORPORATION OF ILLINOIS.

ALARM-CLOCK.

Specification of Letters Patent.

Application flied February 12, 1918. Serial No. 218,779.

To all whom it may concern:

Be it known that I, GEORGE KERN, a sub-' ject of the Emperor of Germany, reslding in the city of Peru, county of La Salle, and State of Illinois, have invented certain new and useful Improvements in Alarm-Clocks of which the following, taken in connection with the accompanying drawing, is a specification.

My invention relates to alarm clocks and has for its object the production of an alarm clock in which all the openings are covered by protective devices to keep out the dust from the movement. A further object of my invention is that the moving parts extending throu h the case have speclal means combined wit said devices themselves to keep all apertures closed continuously whether the devices are being operated or not. Other combinations and constructions used in my alarm clock will be described below and specified in the claims.

It is a well known fact that previous to my invention great difficulty has been experienced by the dust getting mto the movement case and was taken up by the oil thus thickening it and causing it to become gummed in a very short time which slowed up and ultimately stopped the clock mechanism altogether. In my invention the dust is excluded and the circulation of the air is impeded so that practically no new air or oxygen is admitted to oxidize or gum the oils used to lubricate the moving parts.

I accomplish the above objects by means shown in the accompanying drawing in which- Figure 1 is a vertical cross-sectional view of my alarm clock.

Fig. 2 is a view of the rear of the body of my dust proof or protective case.

Fig. 3 shows a section along a line AB of Fig. 2.

Fig. 4 is a front view of the ring which carries the slides by means of which the alarm can be shut off or made continuous or intermittent.

Fig. 5 shows a section along line CD of Fig. 4.

Fig. 6 shows a section along line EF of Fig. 4.

Fig. 7 is a sectional view through one of the openings showing the dust proof construction.

Fig. 8 is an enlarged view of a portion of the rear of my alarm clock showing how I apply my invention to the regulator of same.

Flg. 9 is a side view of" Fig. 8 showing some of the parts in section.

Fig. 10 is an enlarged view showing the method of fastening the movement to the protective case and removing same without removing the bell.

Fig. 11 is an enlarged view showing method of fastening the protective case to the front ring.

Similar numerals represent similar parts throughout the different views.

In the drawings 1 is the front or bezel of my alarm clock, having a pendant 2 with the usual ring 3. Pendant 2 passes through an aperture in bezel 1 and through a cup shaped member 4 (see Fig. 4) assisting to hold member 4 in position in said bezel. Member 4 has a large aperture 5 through its bottom 6 through which is projected the usual clock movement 7 as shown.

Member 4 is also fastened to bezel 1 by means of the legs which support the clock, which legs have a threaded shouldered part which passes through registering apertures in 1 and 4 and into a plate or unit having a threaded aperture all as shown in Fig. 1.

Clock movement 7 is fastened to protective case 8 (see Figs. 2 and 10) by the means shown in dotted lines at 9 in Fig. 1 which means comprises a threaded elongation 11 of movement pillar 10 which passes through a cupped aperture 12 and has a nut 13 with a slot 14 which extends into and through an aperture 15 in the bell 16. It is evident from this construction that the movement 7 can be removed from the protective body 8 by means of a screw driver without first removing the bell 16 from protective body 8. Bell 16 is fastened to protective body 8 by means of the screws 17 shown, (see Fig. 1).

Protective body 8 is fastened to cup shaped member 4 by means ofseveral screws 18 passing-through apertures 19 which have an elongated part 20 which is narrower than the diameter of the aperture itself. Aperture 19 is large enough to allow the head of screw 18 to pass through it when the protective body 8 is turned so that the center of screw 18 and aperture 19 coincide and it is evident that protective body 8 can be detached from member 4.

' "When, however, 8 is turned so that screws 18 are in the slotted or elongated parts 20 the parts 8 and 4-will be together and can through which the manually operated parts of the clock project as shown in Figs. 1, 2 and 7.

Not-ches 26 and 27 in rim 28 of protective case 8 have moving protective means which will be described farther along.

A typical example of the application of my stationary protective means is that shown in aperture 23, shown enlarged 1n Fig. 7. Aperture 23 has the alarm set arbor 29 which passes/through the rear plate of movement 7 and has a partial threaded portion 30 and then a cylindrical part 31 adjoining the said threaded portion.

32 is a spring which rests in apertures 33 in said rear plate and 34 is a friction washer against which the so called friction nut 35 presses and thus causes the arbor 29 to res1st rotation. Mounted on 31 and having a threaded portion fitting the thread 30, is the alarm set stem 36, to which is fastened the knurled hand set 37 as shown.

Surrounding stem 36 isa cone cup-shaped member 38 having an aperture 39 and a flange 40, said aperture having said stem 36 pa ss through it, and said flange being larger 1n diameter than the aperture 23 as shown. Holdin said-flange against 8 is a spring 41, which as an aperture as shown through which the nut 35 passes and by this means retains the spring in position.

It will be seen that stem 36 has a shouldered part 42 which is larger in diameter than the aperture 39, so that 37 cannot be lost in case an uninitiated person in attempting to set the alarm, unscrews the stem 36. Stem 36 and set 37 can only go outwardly as far as the position shown in dotted lines in Fig. 7. i

It is evident that besides the dust proof feature member 38 also has the valuable feature of retaining the alarm set as above described.

A typical'example of the application of my moving protective means is that shown in Figs. 4, 5 and 6, wherein the alarm silencing lever 43 and alarm changing lever 44 pass through theflange 28 of the protective casing 8 by means of notches 26 and 27 therein, respectively.

In the position of lever 43 shown in the solid lines in Fig. 4 the alarm mechanism of my alarm clock cannot operate but if it is in the position shown by the dotted lines the mechanism is released and the alarm will sound. Lever 43 has a body part 45 which forms the section of an annulus concentric with the rim 4 and is retained in position by that the mechanism of my means of lugs 47 from 6, and by means of a fiat spring 48, which is fastened to 6 by means of a screw in aperture 49 as shown.

Flat spring 48 presses against 45 holding it against the inside of 6 so that While 45 slides vwhen a substantial force is applied to 43, it is evident that when no such force is applied to 43 it isheld in position by the means just mentioned and it is evident that the notches 26 and 27 are closed and thus dust proof.

In Fi s. 8 and 9 is shown similar movable means or closing the aperture 25 in protective body 8 and comprises a movable sector 50 which is journaled on the head of the'balance screw 51 and retained against the inside of 8 by means of spring 52.

, Sector 50 has a small aperture 56 through which the hairspring regulator lever 54 passes as shown. This lever 54 is reached in the usual manner through slot 55 in the gong 16 which carries the indicating marks as shown to regulate the clock by.

From the above description it is evident alarm clock is thoroughly protected agamst dust getting into same. I

It will be understood, of course that while I have here shown one form of my invention, I do not wish to limitmyself to the exact form or construction shown, but desire to have it taken in a sense, illustrative of any or all forms of my invention as come fairly within the scope of my claims.

I claim: a

1. In an alarm clock, a clock movement, a protective case having apertures and means for retaining said movement, arbors from said movement projecting into said apertures, members each having an aperture through which said arbors roject and means for holding said meml fers against the edges of the said apertures in said protective case.

2. In an alarm clock, a clock movement, a protective case having apertures and means for retaining said movement, arbors from said movement projecting through said apertures, a setting piece having shouldered parts mounted on one of said arbors, a member having an aperture retained between said shouldered parts and means for holding said member against the edges of said aperture in said protective case.

3. In an alarm clock, a clock movement, a

protective case having apertures and means protective case having apertures and means for retaining said movement, arbors from said movement projecting through said apertures, a threaded portion on one of said arbors, a hand setting nut havin shouldered parts mounted on said threade portion, a cone shaped member having an aperture retained between said shouldered parts, and means for holding said member against the edges of said aperture in said protective case.

5. In an alarm clock, a clock movement, a protective case having apertures and means for retaining said movement, a balance screw fastened to said movement, a plate having an aperture journaled on said balance screw and slidably mounted on said protective case, a lever frictionally journaled on said balance screw passing through the aperture insaid plate, and means for retaining said plate against said protective case.

6. In an alarm clock, a clock movement having an alarm mechanism, a protective case having apertures and means for fastening said movement, a cup shaped holding member concentric with and adjustably fas tened to said protective case, formed members having projecting levers integral there- .with slidably and resiliently mounted on said cup-shaped holdin member, both of said levers being expose for manual opera tion and cooperating together control the action of the alarm mechanism. I

GEORGE KERN. Witnesses:

ANDREW H. NEUREUTHER, FRED HENKEL. 

